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Article 250 of the National Electrical Code covers grounding.
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∙ 11y ago
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NEC Article 250 covers what?
Grounding
Is a grounding rod required for cnc machinery?
Some manufacturers require it and others don't. The NEC does not require this additional ground
What is the smallest size wire to run in parallel permitted by NEC?
NEC Section 310.4 requires a 1/0 AWG and larger be used in parallel.
What is the minnimum size equipment grounding conductor required by the NEC for a branch-circuit protected by a 50-ampere rated circuit breaker?
#10 copper
Can you have a smaller gauge ground?
Yes, NEC has an entire chart on grounding.
NEC Article 250 covers what?
Grounding
Does the Nec allow grounding electrode conductor to be run in conduit that has other conductors in the conduit and what code section?
No, the bare copper grounding conductor can not be in a conduit with other conductors. It can be in conduit by itself to provide mechanical protection for the wire.
What section of the NEC requires that fittings be identified for use with service masts?
NEC 230.28
What section describes the organization of the NEC?
Chapter 1
Is a grounding rod required for cnc machinery?
Some manufacturers require it and others don't. The NEC does not require this additional ground
How do you find a good online tranlater?
Grounding Electrodes and Grounding Electrode Systems All grounding electrodes present at a building or structure must be bonded together to form a grounding electrode system, as required by NEC® Section 250.50. Doing so eliminates voltage gradients, and also improves reliability and grounding performance over time by creating redundancy. If one electrode is damaged, destroyed by corrosion, or removed, other electrodes are available to maintain the all-important connection from the service equipment to ground. Section 250.53(B) states that two or more grounding electrodes effectively bonded together are considered a single grounding electrode system. Permitted Electrodes The NEC recognizes the following seven types of grounding electrodes [250.52(A)]: Metal underground water pipe Metal frame of a building or structure Concrete-encased electrodes Ground ring Rod and pipe electrodes Plate electrodes Other local metal underground systems or structures (piping, tanks, well casings, etc.)
What infections can you get after a cesarean section?
after a cesarian section you can get urine infection or infection in the wound.
What size copper bonding jumper is required by NEC - OR 2011 to bond the gas pipe to a 120v 20A circuit?
I don't know what the NEC - OR 2011 is. Is that a code book for the state of Oregon? The NEC does not allow using a gas pipe as a grounding electrode. You run the risk of heating the gas to explosive temperatures.
What is the smallest size wire to run in parallel permitted by NEC?
NEC Section 310.4 requires a 1/0 AWG and larger be used in parallel.
What is the minnimum size equipment grounding conductor required by the NEC for a branch-circuit protected by a 50-ampere rated circuit breaker?
#10 copper
What section of the 2008 NEC code book does a number 4 AWG neutral conductor have to be identified by being white or natural gray along its entire length?
200.6(b) Nec
What is the definition of the connection between the grounded circuit and the equipment grounding conductor at the service?
2008 NEC - Article 100 Definitions - Bonding Jumper, Main Main Bonding Jumper is the answer.
